package fr.paris.sud.com;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.List;
import java.io.File;
import java.util.Collections;
import java.util.HashMap;
import java.util.Vector;

import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;

import fr.lri.swingstates.canvas.CImage;


public class FileTree extends JPanel {
	
		
	ImageValidator val = new ImageValidator();
	VirtualGrid ghostVirtualGrid;
	
	
	public FileTree(File dir, final IconThumbnail iImg, final HashMap<Integer,ImageStructure> tableOfImages, VirtualGrid ghost) {
	    setLayout(new BorderLayout());
	    this.ghostVirtualGrid = ghost;
	    
	   
	    // Make a tree list with all the nodes, and make it a JTree
	    JTree tree = new JTree(addNodes(null, dir));

	    
	    // Add a listener
	    tree.addTreeSelectionListener(new TreeSelectionListener() {
	      public void valueChanged(TreeSelectionEvent e) {
	        DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.getPath().getLastPathComponent();
	       
//	        System.out.println("You selected " + node.getParent().toString()+"\\"+node.getUserObject().toString());
	        
	        if(val.validate(node.getUserObject().toString())){
	        	
	        	ImageStructure image = new ImageStructure();
	        	image.setImagePath(node.getParent().toString()+"\\"+node.getUserObject().toString());
	        	
	        	ghostVirtualGrid.incrementNextPosition();
	        	int xPosition = ghostVirtualGrid.getNextEmptyX();
	        	int yPosition = ghostVirtualGrid.getNextEmptyY();
	        	CImage icon = iImg.loadimages(image, xPosition, yPosition);
	        	image.visualization = icon;
	        	ghostVirtualGrid.addElementToGrid(image);
	        	
	        	
		        tableOfImages.put(icon.hashCode(), image);   
	        }

	      }
	      
	    });
	    
	    

	    // Lastly, put the JTree into a JScrollPane.
	    JScrollPane scrollpane = new JScrollPane();
	    scrollpane.getViewport().add(tree);
	    add(BorderLayout.CENTER, scrollpane);
	  }

	  /** Add nodes from under "dir" into curTop. Highly recursive. */
	  DefaultMutableTreeNode addNodes(DefaultMutableTreeNode curTop, File dir) {
	    String curPath = dir.getPath();
	    DefaultMutableTreeNode curDir = new DefaultMutableTreeNode(curPath);
	    if (curTop != null) { // should only be null at root
	      curTop.add(curDir);
	    }
	    Vector ol = new Vector();
	    String[] tmp = dir.list();
	    for (int i = 0; i < tmp.length; i++)
	      ol.addElement(tmp[i]);
	    Collections.sort(ol, String.CASE_INSENSITIVE_ORDER);
	    File f;
	    Vector files = new Vector();
	    // Make two passes, one for Dirs and one for Files. This is #1.
	    for (int i = 0; i < ol.size(); i++) {
	      String thisObject = (String) ol.elementAt(i);
	      String newPath;
	      if (curPath.equals("."))
	        newPath = thisObject;
	      else
	        newPath = curPath + File.separator + thisObject;
	      if ((f = new File(newPath)).isDirectory())
	        addNodes(curDir, f);
	      else
	        files.addElement(thisObject);
	    }
	    // Pass two: for files.
	    for (int fnum = 0; fnum < files.size(); fnum++)
	      
	    if(val.validate(files.elementAt(fnum).toString())){
	    	curDir.add(new DefaultMutableTreeNode(files.elementAt(fnum)));
	    	}
	    return curDir;
	  }

	  public Dimension getMinimumSize() {
	    return new Dimension(200, 400);
	  }

	  public Dimension getPreferredSize() {
	    return new Dimension(200, 400);
	  }
	  
	  
}
